Learn how to build a custom Bind9 Docker image for efficient DNS management in small networks. Explore the process of creating a Dockerfile, building the image, and setting up a Docker Compose file. Dive into configuring DNS settings, including forward and reverse lookup zones. Discover troubleshooting techniques, address security concerns, and understand how to update DNS records. Master the art of containerizing Bind9 for improved network management and gain valuable skills in Docker image creation applicable to other software applications.